When someone has confidence and he knows what he is doing, it shows in his body language, the way he talks, stands and occupies space around him. Robbers do not want to get in trouble, as you said, sometimes the robber is more afraid. It is always better if you can protect yourself without having a fight. Thank you so much @thewriterman for sharing your experience. I really appreciate that!
By the way, I'm also wondering what the lion was thinking, maybe eaten by the zebra. LOL